Whitepaper : A Lightweight Virtualization Platform for Developers

Mar 10, 2016

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Docker is a platform for developers and system administrators, which allows developing, running and
deploying applications. Docker lets you, quickly, assemble applications from components and convert them into containers. It allows you to get your code tested and deployed into production in a prompt manner.

Unlike virtual machines, containers do not have high overheads and hence, enable more efficient usage of the underlying system and resources. The benefit of Docker is that it allows users to package an application with all of its dependencies into a standardized unit for software development. Docker, once installed on any OS/ Server, can run the containers on it. The containers in Docker, usually, contain the following components:

The cut down version of most OS like Ubuntu, Centos etc.

The dependencies that are required for the application to run.

The actual application files along with developer code.

The database files.

For the above components, you can use separate containers or the same containers. The power of Docker is displayed when you are able to link separate containers of the application with the database containers. By doing so, you are able to maintain different variants of the database for testing, production etc. It will only, take a single command to change the database containers, without making any changes to the configuration of the container, which contains the application data.

This whitepaper by RapidValue Solutions explains the step-by-step installation of Docker in devices with different OS, also, addresses the advantages and usefulness of Docker. Docker makes it easier to create, deploy, and run applications by using Containers. Containers allow a developer to package up an application. Docker is a tool that is designed to benefit, both, the developers and system administrators. The developers can focus on writing code without worrying about the system that it will, ultimately, be running on. Docker gives flexibility and also, potentially reduces the number of systems needed.

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